What is the solution to this system of equations? x-z = -3
y + z = 9
x+ z = 7
A. x = -2, y = 14, z = -5
B. x= 2, y = 4, z = 5
C. x= 7, y = 9, z = 0
D. x= 0, y = 2, z = 7

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for

one way is to plot 2 points and connect them which is what the answer choices seem to be doing

it seems to be using the y intercept and the slope

y=mx+b, m=slope, b=y-intercept (where the line hits the y axis)

slope=rise/run

y-intercept is where the line croses the y axis which is the y value where x=0

you seem to have given the wrong slope (you didn't put a number in front of te x, it should be 2/3 or 3/2 looking at the answer options)

y=? x-1

m=? because of your fault

b=-1

so it has a slope of ? and y intercept of -1, meaning it pases through (0,-1)

so draw point (0,-1) (so answer is one of the first 2 option)

if slope is 2/3, then go up 2 and right 3 then draw line through those 2 points

if slope is 3/2, then go up 3 and right 2 then draw line through those 2 points

the answer is 23.39370079

step-by-step explanation: